Role of qubit-cavity entanglement for switching dynamics of quantum interfaces in superconductor metamaterials


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

We study quantum effects of strong driving field applied to dissipative hybrid qubit-cavity system which are relevant for a realization of quantum gates in superconducting quantum metamaterials. We demonstrate that effects of strong and non-stationary drivings have significantly quantum nature and cannot be treated by means of mean-field approximation. This is shown from a comparison of steady state solution of the standard Maxwell–Bloch equations and numerical solution of Lindblad equation on a density matrix. We show that mean-field approach provides very good agreement with the density matrix solution at not very strong drivings f < f* but at f > f* a growing value of quantum correlations between fluctuations in qubit and photon sectors changes a behavior of the system. We show that in regime of non-adiabatic switching on of the driving such a quantum correlations influence a dynamics of qubit and photons even at weak f.

Sobre autores

S. Remizov

Dukhov Research Institute of Automatics (VNIIA); Kotel’nikov Institute of Radio Engineering and Electronics

Email: shapiro.dima@gmail.com
Rússia, Moscow, 127055; Moscow, 125009

D. Shapiro

Dukhov Research Institute of Automatics (VNIIA); Kotel’nikov Institute of Radio Engineering and Electronics; National University of Science and Technology MISIS

Autor responsável pela correspondência
Email: shapiro.dima@gmail.com
Rússia, Moscow, 127055; Moscow, 125009; Moscow, 119049

A. Rubtsov

Dukhov Research Institute of Automatics (VNIIA); Russian Quantum Center

Email: shapiro.dima@gmail.com
Rússia, Moscow, 127055; Skolkovo, Moscow region, 143025

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Inc., 2017